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It's a date!
Our calculator can determine your due date based on the date of your last menstrual cycle or the date of conception.
The embryonic stage begins
Taken together, these events and strategic initiatives highlight the Chinese aerospace industry’s realization that, in order to become a globally competitive player, it will need depth as much as breadth. After getting their hands on both ends of the value chain—aircraft design and final assembly—the Chinese now understand that what will make or break their industry over the long term is what happens in the middle of the value chain, at the component and subsystem levels. And that is why China’s ambition to compete with Boeing and Airbus, as well as with GE and Rolls-Royce for aircraft engines, is now more credible than ever.
Inga Beale出任伦敦劳埃德保险公司CEO，Mary Barra 出任通用汽车高级副总裁，这些都为2013年的女性地位写下了浓墨重彩的一笔。接下来的一年，女性地位还将继续发展，但进展会缓慢而微小，但你一定能随处看到女性的权力和影响力。再怎么说，就连日本都开始鼓励女性工作了呢。
Consider carrier screening
It's a simple blood or saliva test to see whether your baby is at risk for any genetic disorders, such as cystic fibrosis or sickle cell disease.
36 weeks to go!
You're in your first month
Your little embryo
Justin Bieber剃发募捐 集得4万美金
日前，斯坦福大学商学院(Stanford Graduate School of Business)教授彼得o库迪斯基于这场荷兰危机共同撰写了一篇文章，围绕“个人经验（而非市场信息）决定乐观、悲观以及信贷的获得与否”这种不那么科学的方法给出了现代经验。
Swift has also been having quite the year, claiming the No. 2 spot with $80 million. More than a year after the launch of 1989—the top release of 2014 with over 3.6 million copies sold—her latest single, “Wildest Dreams,” has ascended to the top of the charts, boosted by a music video with Scott Eastwood. But it was the beginning of her epic 1989 World Tour that placed her so close to the top of this list.
Amniotic sac and yolk sac
9. “The Big Short” Adam McKay plays it for comedy, but as he carpet-bombs the screen with laughs, he makes it clear that his take on the 2008 economic meltdown is a staggering American tragedy.
See what fraternal twins look like in the womb this week.
Don't worry. Many women don't feel anything yet this week. In fact, most early pregnancy symptoms don't start until about 6 weeks.
Tender, swollen breasts
Breast tenderness can be one of the earliest signs of pregnancy. It usually starts around 4 to 6 weeks and lasts through the first trimester.
For many women, exhaustion is one of the first signs of pregnancy. But other women hardly seem to slow down at all.
Nausea or vomiting
Morning sickness can strike at any time of day. It usually starts around 6 weeks of pregnancy but can begin as early as 4 weeks. Some women have cramping as well.
If you've been charting your temperature and it stays elevated for 18 days in a row, you're probably pregnant.
Take a pregnancy test
If you haven't already, you should be able to find out whether you're pregnant. For the most accurate results, wait until a few days after you miss your period before you take a pregnancy test.
Make a prenatal appointment
If the test is positive, call your doctor or midwife and schedule your first prenatal appointment. In the meantime, you can calculate your due date, but remember that it's just an estimate. You're just as likely to go into labor any day during the two weeks before or after.
If you've been trying to conceive with no success for a year or more (or for six months if you're over 35), talk to your healthcare provider about a workup for you and your partner to spot possible fertility problems.
ACOG. 2015. FAQ156. Prenatal development: How your baby grows during pregnancy. American College of Obstetricians and Gynecologists. 比蒂在向震惊的人们解释这一失误时说：“我打开信封，看到是‘《爱乐之城》中的爱玛?斯通’，我就想告诉你们了，所以我看了费和你们很长时间。我并不是想搞笑。最佳影片是《月光男孩》。” [Accessed May 2019]
FDA. 2014. Home Use Tests: Pregnancy. U.S. Food and Drug Administration. 31岁的罗西每天的工作就是计算五角大楼在养老、医疗和教育福利方面未来的成本。但他说，这份工作不仅仅是鼓捣电子表格数据。他还要与其它政府部门进行沟通，并就金融模型与同事举行头脑风暴会议。 [Accessed May 2019]
March of Dimes. 2015. Prescription drugs, over-the-counter drugs, supplements and herbal products. 获奖者：布兰妮·斯皮尔斯 [Accessed May 2019]
Mayo Clinic. 2015. Prenatal vitamins: Why they matter, how to choose. Google's top 10 searches for 2017–U.S. [Accessed May 2019]
MedlinePlus (ADAM). 2015. Fetal development. 中国建材行业一周大事记（2.29-3.4） [Accessed May 2019]